While spending some quality time underneath the instrument panel last night, installing the canopy hinge struts and other fun things, I was reminded that there is light streaming in through the bottom corners of the firewall into the cockpit. Is there a consensus on plugging these small gaps up with maybe some foam and proseal? I may as well do it when I mix up the next batch of proseal for the sub panel flange gaps in section 35, but not if there's supposed to be a gap there for some reason.
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Bottom corners of firewall - seal or leave open?
- Thread starter iamtheari
- Start date
By foam, I just meant to replicate the process in page 35-09 steps 1 and 2 followed by page 35-22 step 2, where small foam blocks are used in a couple of larger gaps where the upper longerons meet the firewall and forward upper skin as backing for pro seal.
The gaps I am asking about here are where the lower longerons meet the firewall, side skin, and bottom skin. I'm wondering if I should plug the gap with foam blocks from the inside to form a backing for pro seal on the outside (firewall side).
Raymo
Well Known Member
As long as the foam is later removed, but I can't imagine holes large enough to need it. DanH has proven that you want nothing on the inside of the firewall.
